Lorazepam with a Device

{
  "resourceType" : "MedicationAdministration",
  "id" : "medadmin0307",
  "contained" : [{
    "resourceType" : "Medication",
    "id" : "med0313",
    "code" : {
      "coding" : [{
        "system" : "http://snomed.info/sct",
        "code" : "400621001",
        "display" : "Lorazepam 2mg/ml injection solution 1ml vial (product)"
      }]
    },
    "doseForm" : {
      "coding" : [{
        "system" : "http://snomed.info/sct",
        "code" : "385219001",
        "display" : "Solution for injection"
      }]
    },
    "ingredient" : [{
      "item" : {
        "concept" : {
          "coding" : [{
            "system" : "http://snomed.info/sct",
            "code" : "387106007",
            "display" : "Lorazepam (substance)"
          }]
        }
      },
      "strengthRatio" : {
        "numerator" : {
          "value" : 2,
          "system" : "http://unitsofmeasure.org",
          "code" : "mg"
        },
        "denominator" : {
          "value" : 1,
          "system" : "http://unitsofmeasure.org",
          "code" : "mL"
        }
      }
    }]
  }],
  "status" : "completed",
  "medication" : {
    "reference" : {
      "reference" : "#med0313"
    }
  },
  "subject" : {
    "reference" : "Patient/pat1",
    "display" : "Donald Duck"
  },
  "encounter" : {
    "reference" : "Encounter/f001",
    "display" : "encounter who leads to this prescription"
  },
  "occurrencePeriod" : {
    "start" : "2015-01-15T04:30:00+01:00",
    "end" : "2015-01-15T14:30:00+01:00"
  },
  "performer" : [{
    "function" : {
      "coding" : [{
        "system" : "http://terminology.hl7.org/CodeSystem/med-admin-perform-function",
        "code" : "performer",
        "display" : "Performer"
      }]
    },
    "actor" : {
      "reference" : {
        "reference" : "Practitioner/f007",
        "display" : "Patrick Pump"
      }
    }
  }],
  "request" : {
    "reference" : "MedicationRequest/medrx0315"
  },
  "device" : [{
    "reference" : {
      "reference" : "Device/f001"
    }
  }],
  "dosage" : {
    "text" : "0.05 - 0.1mg/kg IV over 2-5 minutes every 15 minutes as needed",
    "route" : {
      "coding" : [{
        "system" : "http://snomed.info/sct",
        "code" : "255560000",
        "display" : "Intravenous"
      }]
    },
    "method" : {
      "coding" : [{
        "system" : "http://snomed.info/sct",
        "code" : "420620005",
        "display" : "Push - dosing instruction imperative (qualifier value)"
      }]
    },
    "dose" : {
      "value" : 7,
      "unit" : "mg",
      "system" : "http://unitsofmeasure.org",
      "code" : "mg"
    },
    "rateQuantity" : {
      "value" : 4,
      "unit" : "min",
      "system" : "http://unitsofmeasure.org",
      "code" : "min"
    }
  }
}